EP2455359B1 - Procédé pour la purification d'oléfines et amines dans un flux d'hydrocarbure - Google Patents

Procédé pour la purification d'oléfines et amines dans un flux d'hydrocarbure Download PDF

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Publication number
EP2455359B1
EP2455359B1 EP10192247A EP10192247A EP2455359B1 EP 2455359 B1 EP2455359 B1 EP 2455359B1 EP 10192247 A EP10192247 A EP 10192247A EP 10192247 A EP10192247 A EP 10192247A EP 2455359 B1 EP2455359 B1 EP 2455359B1
Authority
EP
European Patent Office
Prior art keywords
amine
isomers
hydrocarbon stream
organic amine
distillation
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
EP10192247A
Other languages
German (de)
English (en)
Other versions
EP2455359A1 (fr
Inventor
Wolfgang Müller
Marco Haff
Anton Wellenhofer
Anina Dr. Wöhl
Heinz BÖLT
Andreas Dr. Meiswinkel
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Linde GmbH
Saudi Basic Industries Corp
Original Assignee
Linde GmbH
Saudi Basic Industries Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority to EP10192247A priority Critical patent/EP2455359B1/fr
Application filed by Linde GmbH, Saudi Basic Industries Corp filed Critical Linde GmbH
Priority to ES10192247T priority patent/ES2407256T3/es
Priority to CA2818267A priority patent/CA2818267C/fr
Priority to SG2013039276A priority patent/SG190364A1/en
Priority to JP2013540249A priority patent/JP2014500881A/ja
Priority to BR112013012708-2A priority patent/BR112013012708B1/pt
Priority to MYPI2013001859A priority patent/MY161124A/en
Priority to MX2013005766A priority patent/MX348527B/es
Priority to CN201180065772.8A priority patent/CN103328418B/zh
Priority to KR1020137015101A priority patent/KR101819263B1/ko
Priority to US13/988,776 priority patent/US9284238B2/en
Priority to RU2013128591/04A priority patent/RU2574387C2/ru
Priority to PCT/EP2011/004828 priority patent/WO2012069104A1/fr
Priority to TW100138662A priority patent/TWI453194B/zh
Publication of EP2455359A1 publication Critical patent/EP2455359A1/fr
Application granted granted Critical
Publication of EP2455359B1 publication Critical patent/EP2455359B1/fr
Priority to JP2017147678A priority patent/JP2017190351A/ja
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C7/00—Purification; Separation; Use of additives
    • C07C7/04—Purification; Separation; Use of additives by distillation
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C9/00—Aliphatic saturated hydrocarbons

Definitions

  • the present invention relates to a method for purification of a hydrocarbon stream containing linear alpha olefins, isomers thereof and at least one organic amine.
  • processes are often conducted resulting in an outlet stream product or a feed stream to a process unit comprising hydrocarbons and amines.
  • An example thereof is the outlet stream from a reactor utilized for preparing linear alpha-olefins by oligomerization of ethylene.
  • the linear alpha-olefins produced are then separated into different fractions for further use or marketing.
  • an amine is added during the oligomerization process or is added into a reactor outlet piping system.
  • Such processes are, for example, disclosed in US 5,811,619 or WO 2009/095147 .
  • amines are utilized as corrosion inhibitors or for adjustment of the pH value.
  • n-dodecyl amine DDA
  • 2-ethyl-hexyl-amine which has a very close boiling point to C 10 -linear alpha olefins.
  • the hydrocarbon stream which is an outlet stream from a reactor for preparing linear alpha-olefins (LAO), or a fraction thereof contains amongst linear alpha-olefins also isomers thereof, namely isomers having internal double bonds and/or branched isomers, which also have to be separated from the desired linear alpha-olefins to improve the purity of the LAO's.
  • This object is achieved by a method for purification of a hydrocarbon stream containing linear alpha olefins, isomers thereof and at least one organic amine, the linear alpha olefins, isomers and the amine having boiling points under atmospheric pressure which differ by at most 5°C, comprising the step of removing a major amount of the organic amine from the hydrocarbon stream by distillation, wherein the distillation is carried out to that, together with the amine, between 5% and 95 wt% of the isomers, based on the total amount of the isomers in the hydrocarbon stream, are removed from the hydrocarbon stream in an amine/isomer-rich fraction.
  • the amine/isomer-rich fraction may be in the overhead product or the bottoms product of the distillation.
  • the boiling points under atmospheric pressure of the linear alpha olefins, isomers thereof and the organic amine differ by at most 3°C, preferably 0.5-3°C.
  • the isomers shall be preferably removed together with the amine.
  • distillation is carried out under atmospheric pressure.
  • a distillation column is utilized for removing the major amount of the organic amine, preferably having from 50 to 100 theoretical trays.
  • the hydrocarbon stream contains as major constituent linear C 10 alpha olefins and its isomers and/or linear C 14 alpha olefins and its isomers.
  • the amine/isomer-rich fraction is further separated by removing the organic amine contained therein by converting with an acid and forming an amine salt, extracting the amine-salt formed into an aqueous phase, and optionally isolating the organic amine.
  • separation of the organic amine is preferably in a batch or continuous operation.
  • the amine/isomer-rich fraction is recycled to a reaction section of an oligomerization plant without prior separation.
  • the isolated organic amine is recycled to a reaction section of an oligomerization plant.
  • the inventive method for purification of a hydrocarbon stream containing linear alpha-olefins, isomers thereof and organic amine provides finally the possibility of significant removal of the amine and the isomers to improve the purity of the desired linear alpha-olefin products. Further, the inventive method avoids the requirement of acid-resistant materials of construction, as no acid for salt formation with the amine is necessary to be added.
  • the inventive method provides a hydrocarbon product of linear alpha-olefins which can be marketed without any restriction due to its amine content. Further, the inventive method allows easy and sufficient removal of the amine from the hydrocarbon stream. Additionally, the costs for the amine utilized in respective chemical reaction processes can be considerably reduced, since the amine can be recovered and recycled.
  • isomers contained in the hydrocarbon stream may act as an (internal) extraction agent in the distillation step, resulting in an extractive distillation without the need to add a specific external extraction agent.
  • the method for purification is advantageously embedded in a method for preparing linear alpha-olefins (LAO) by oligomerization of ethylene, preferably in the presence of solvent and catalyst, comprising the steps of feeding ethylene into an oligomerization reactor, oligomerizing the ethylene in the reactor, removing a reactor outlet stream comprising linear alpha-olefins from the reactor via a reactor outlet piping system, optionally transferring the reactor outlet stream to a catalyst deactivation and removal step, and optionally deactivating and removing the catalyst from the reactor outlet stream, wherein at least one organic amine is added into the oligomerization reactor and/or into the reactor outlet piping system.
  • the reactor outlet stream or a fraction thereof can then be taken as the hydrocarbon stream in the present invention.
  • the inventive method can be applied especially for LAO fractions which include respective amines.
  • Amines can be, for example, n-dodecyl amine which is then usually obtained in the C 14 -product fraction, and 2-ethyl-hexyl-amine which is usually obtained in the C 10 fraction of a fractionated crude LAO oligomerization product.
  • the amine contained in the amine/isomer-rich fraction can be removed there from by reaction with an acid in a continuous mode or in a batch operation and can then be recycled to the reaction section of a LAO plant.
  • the amine/isomer-rich fraction can be recycled to the reaction section of the LAO plant without prior separation for minimization of the requirements of a fresh amine.
  • a certain portion of that fraction has then preferably to be purged from the plant.
  • An oligomerization of ethylene to result in linear alpha-olefins is carried out in a reactor utilizing a catalyst comprising a zirconium component and an organo aluminium component, a process which is well known in the art.
  • a catalyst comprising a zirconium component and an organo aluminium component, a process which is well known in the art.
  • an organic amine is added, in the present example 2-ethyl-hexyl-amine.
  • a crude C 10 fraction comprising 1-decene as main product, organic amine and numerous decene isomers, such as internal and branched decenes.
  • the crude C 10 fraction has the following composition (in weight percent): 1-decene 90 Amine 3 Decene isomers 7
  • the crude C 10 fraction is then routed to a distillation column with 70 theoretical trays, operating at atmospheric pressure.
  • the distillation is operated at stable stationary conditions so that a certain portion of the C 10 isomers can be removed together with the amine in the overhead product, depending on the individual specification required for marketing of the C 10 product.
  • Analysis of overhead product and bottoms product is possible by means well known in the art, for example by gas chromatography.
  • analysis of the fractions can be carried out at the end of the distillation process, or can be done by taking samples of the fraction during distillation, for example on an online basis.
  • the end of the distillation step can be fixed by the operator, i.e. when a desired amount of amine and/or isomers can be detected in the overhead product.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Analytical Chemistry (AREA)
  • Water Supply & Treatment (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Claims (9)

  1. Procédé de purification d'un flux d'hydrocarbures contenant des alpha-oléfines linéaires, des isomères de celles-ci et au moins une amine organique, les alpha-oléfines linéaires, les isomères et l'amine possédant des points d'ébullition sous la pression atmosphérique, qui diffèrent de 5 °C au plus, comprenant l'étape d'élimination par distillation de la majeure partie de l'amine organique du flux d'hydrocarbures, la distillation étant opérée de manière telle qu'entre 5 % et 95 % en poids des isomères par rapport à la quantité totale des isomères du flux d'hydrocarbures sont éliminés du flux d'hydrocarbures, en même temps que l'amine, dans une fraction de la distillation riche en amine et en isomères.
  2. Procédé selon la revendication 1, dans lequel les points d'ébullition sous la pression atmosphérique des alpha-oléfines linéaires, des isomères de celles-ci et de l'amine diffèrent de 3 °C au plus, de préférence de 0,5 à 3°C.
  3. Procédé selon la revendication 1 ou 2, dans lequel la distillation est opérée sous la pression atmosphérique.
  4. Procédé selon l'une quelconque des revendications précédentes, dans lequel une colonne de distillation est utilisée pour éliminer la majeure partie de l'amine organique, possédant de préférence 50 à 100 plateaux théoriques.
  5. Procédé selon l'une quelconque des revendications précédentes, dans lequel le flux d'hydrocarbures contient comme constituant essentiel des alpha-oléfines linéaires en C10 et des isomères de celles-ci et/ou des alpha-oléfines linéaires en C14 et des isomères de celles-ci.
  6. Procédé selon l'une quelconque des revendications précédentes, dans lequel la fraction riche en amine/isomères fait l'objet d'une séparation plus poussée en éliminant l'amine organique contenue dans celle-ci, par conversion avec un acide, formation d'un sel d'amine, extraction du sel d'amine formé dans une phase aqueuse et, facultativement, isolement de l'amine organique.
  7. Procédé selon la revendication 6, dans lequel la séparation plus poussée de l'amine organique se déroule de manière continue ou discontinue.
  8. Procédé selon l'une quelconque des revendications précédentes, dans lequel la fraction riche en amine/isomères est recyclée dans un réacteur d'une unité d'oligomérisation, sans séparation préalable.
  9. Procédé selon la revendication 6 ou 7, dans lequel l'amine organique isolée est recyclée à un réacteur d'une unité d'oligomérisation.
EP10192247A 2010-11-23 2010-11-23 Procédé pour la purification d'oléfines et amines dans un flux d'hydrocarbure Active EP2455359B1 (fr)

Priority Applications (15)

Application Number Priority Date Filing Date Title
ES10192247T ES2407256T3 (es) 2010-11-23 2010-11-23 Procedimiento para la purificación de olefinas y aminas de una corriente de hidrocarburo
EP10192247A EP2455359B1 (fr) 2010-11-23 2010-11-23 Procédé pour la purification d'oléfines et amines dans un flux d'hydrocarbure
RU2013128591/04A RU2574387C2 (ru) 2010-11-23 2011-09-27 Способ очистки углеводородного потока, содержащего олефин и амин
JP2013540249A JP2014500881A (ja) 2010-11-23 2011-09-27 オレフィンおよびアミンを含有する炭化水素流の精製方法
BR112013012708-2A BR112013012708B1 (pt) 2010-11-23 2011-09-27 "método para purificação de uma corrente de hidrocarboneto contendo olefina e amina."
MYPI2013001859A MY161124A (en) 2010-11-23 2011-09-27 Method for purification of a hydrocarbon stream containing olefin and amine
MX2013005766A MX348527B (es) 2010-11-23 2011-09-27 Método para la purificación de una corriente de hidrocarburo que contiene olefina y amina.
CN201180065772.8A CN103328418B (zh) 2010-11-23 2011-09-27 纯化含烯烃和胺的烃流的方法
CA2818267A CA2818267C (fr) 2010-11-23 2011-09-27 Procede de purification d'un courant d'hydrocarbures contenant des olefines et des amines
US13/988,776 US9284238B2 (en) 2010-11-23 2011-09-27 Method for purification of a hydrocarbon stream containing olefin and amine
SG2013039276A SG190364A1 (en) 2010-11-23 2011-09-27 Method for purification of a hydrocarbon stream containing olefin and amine
PCT/EP2011/004828 WO2012069104A1 (fr) 2010-11-23 2011-09-27 Procédé de purification d'un courant d'hydrocarbures contenant des oléfines et des amines
KR1020137015101A KR101819263B1 (ko) 2010-11-23 2011-09-27 올레핀 및 아민을 함유하는 탄화수소 스트림의 정제방법
TW100138662A TWI453194B (zh) 2010-11-23 2011-10-25 包含烯類及胺類之烴流的純化方法
JP2017147678A JP2017190351A (ja) 2010-11-23 2017-07-31 オレフィンおよびアミンを含有する炭化水素流の精製方法

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP10192247A EP2455359B1 (fr) 2010-11-23 2010-11-23 Procédé pour la purification d'oléfines et amines dans un flux d'hydrocarbure

Publications (2)

Publication Number Publication Date
EP2455359A1 EP2455359A1 (fr) 2012-05-23
EP2455359B1 true EP2455359B1 (fr) 2013-03-27

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EP10192247A Active EP2455359B1 (fr) 2010-11-23 2010-11-23 Procédé pour la purification d'oléfines et amines dans un flux d'hydrocarbure

Country Status (13)

Country Link
US (1) US9284238B2 (fr)
EP (1) EP2455359B1 (fr)
JP (2) JP2014500881A (fr)
KR (1) KR101819263B1 (fr)
CN (1) CN103328418B (fr)
BR (1) BR112013012708B1 (fr)
CA (1) CA2818267C (fr)
ES (1) ES2407256T3 (fr)
MX (1) MX348527B (fr)
MY (1) MY161124A (fr)
SG (1) SG190364A1 (fr)
TW (1) TWI453194B (fr)
WO (1) WO2012069104A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2738152B1 (fr) * 2012-11-28 2019-05-01 Saudi Basic Industries Corporation Procédé de suppression et de récupération d'amines organiques à partir d'un flux d'hydrocarbures
CN111004083B (zh) * 2019-12-27 2022-05-10 江苏广域化学有限公司 一种烯类有机化合物的纯化方法

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60104028A (ja) * 1983-11-09 1985-06-08 Asahi Chem Ind Co Ltd 環状アルコ−ルの製造法
JPS62123138A (ja) * 1985-11-22 1987-06-04 Mitsubishi Chem Ind Ltd シクロペンタジエンの分離回収法
FR2715154B1 (fr) 1994-01-14 1996-04-05 Inst Francais Du Petrole Procédé de production d'oléfines alpha légères de pureté améliorée par oligomérisation, de l'éthylène.
JPH08283330A (ja) * 1995-04-18 1996-10-29 Mitsubishi Chem Corp α−オレフイン低重合体の製造方法
JPH09143228A (ja) * 1995-11-22 1997-06-03 Sumitomo Chem Co Ltd エチレン−α−オレフィン共重合体の製造方法
AR049714A1 (es) 2004-07-13 2006-08-30 Shell Int Research Proceso de preparacion de alfa olefinas lineales
US8058498B2 (en) 2004-10-29 2011-11-15 Sandra Jensen Device for removing oxygen-containing organic compounds from mixtures of various hydrocarbon compounds
MY156865A (en) 2008-01-30 2016-04-15 Linde Ag Method for preparing linear alpha-olefins
EP2258674A1 (fr) 2009-05-06 2010-12-08 Saudi Basic Industries Corporation Procédé de suppression d'amine organique à partir d'un flux d'hydrocarbures

Also Published As

Publication number Publication date
WO2012069104A8 (fr) 2013-07-11
BR112013012708A2 (pt) 2016-09-06
CA2818267C (fr) 2019-09-17
TWI453194B (zh) 2014-09-21
TW201221513A (en) 2012-06-01
ES2407256T3 (es) 2013-06-12
JP2017190351A (ja) 2017-10-19
BR112013012708B1 (pt) 2018-11-06
MY161124A (en) 2017-04-14
WO2012069104A1 (fr) 2012-05-31
US20130267752A1 (en) 2013-10-10
MX348527B (es) 2017-06-16
RU2013128591A (ru) 2014-12-27
EP2455359A1 (fr) 2012-05-23
US9284238B2 (en) 2016-03-15
JP2014500881A (ja) 2014-01-16
CA2818267A1 (fr) 2012-05-31
CN103328418A (zh) 2013-09-25
SG190364A1 (en) 2013-06-28
KR20130125374A (ko) 2013-11-18
CN103328418B (zh) 2015-12-09
KR101819263B1 (ko) 2018-01-17
MX2013005766A (es) 2013-10-01

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